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The initial-final mass relation (IFMR) plays a crucial role in understanding stellar structure and evolution by linking a star's initial mass to the mass of the resulting white dwarf. This study explores the IFMR in the initial mass range…

太阳与恒星天体物理 · 物理学 2024-03-18 Francesco Addari , Paola Marigo , Alessandro Bressan , Guglielmo Costa , Kendall Shepherd , Guglielmo Volpato

The initial-final mass relation (IFMR) represents the total mass lost by a star during the entirety of its evolution from the zero age main sequence to the white dwarf cooling track. The semi-empirical IFMR is largely based on observations…

太阳与恒星天体物理 · 物理学 2021-09-28 Joseph W. Barnett , Kurtis A. Williams , A. Bédard , Michael Bolte

We present the initial-final mass relation (IFMR) based on the self-consistent analysis of Sirius B and 79 white dwarfs from 13 star clusters. We have also acquired additional signal on eight white dwarfs previously analyzed in the NGC 2099…

太阳与恒星天体物理 · 物理学 2018-10-17 Jeffrey D. Cummings , Jason S. Kalirai , P. -E. Tremblay , Enrico Ramirez-Ruiz , Jieun Choi

Using the most recent results about white dwarfs in 10 open clusters, we revisit semi-empirical estimates of the initial-final mass relation in star clusters, with emphasis on the use of stellar evolution models. We discuss the influence of…

天体物理学 · 物理学 2011-02-11 Maurizio Salaris , Aldo Serenelli , Achim Weiss , Marcelo Miller Bertolami

Recent studies of white dwarfs in open clusters have provided new constraints on the initial - final mass relationship (IFMR) for main sequence stars with masses in the range 2.5 - 6.5 Mo. We re-evaluate the ensemble of data that determines…

天体物理学 · 物理学 2009-11-11 L. Ferrario , D. Wickramasinghe , J. Liebert , K. A. Williams

The Initial-Final Mass-Relation (IFMR) maps the masses of main sequence stars to their white dwarf descendants. The most common approach to measure the IFMR has been to use white dwarfs in clusters. However, it has been shown that wide…

太阳与恒星天体物理 · 物理学 2023-11-28 Mark A. Hollands , Stuart P. Littlefair , Steven G. Parsons

The initial mass-final mass relationship (IFMR) of white dwarfs (WD) represents a crucial benchmark for stellar evolution models, especially for the efficiency of mixing episodes and mass loss during the asymptotic giant branch (AGB) phase.…

太阳与恒星天体物理 · 物理学 2022-04-14 Paola Marigo

Observations have indicated that the prestellar core mass function (CMF) is similar to the stellar initial mass function (IMF), except for an offset towards larger masses. This has led to the idea that there is a one-to-one relation between…

太阳与恒星天体物理 · 物理学 2021-03-31 V. -M. Pelkonen , P. Padoan , T. Haugbølle , Å. Nordlund

We examine the applicability of the initial-to-final mass relation (IFMR) for white dwarfs (WDs) in intermediate-separation binary systems (approximately 1 AU), using astrometric binaries identified in open clusters from Gaia DR3. A careful…

太阳与恒星天体物理 · 物理学 2025-01-30 Oren Ironi , Sagi Ben-Ami , Na'ama Hallakoun , Sahar Shahaf

The initial-final mass relation represents a mapping between the mass of a white dwarf remnant and the mass that the hydrogen burning main-sequence star that created it once had. The relation thus far has been constrained using a sample of…

We have expanded the sample of observed white dwarfs in the rich open cluster NGC 2099 (M37) with the Keck Low-Resolution Imaging Spectrometer. Of 20 white dwarf candidates, the spectroscopy shows 19 to be true white dwarfs with 14 of these…

太阳与恒星天体物理 · 物理学 2015-07-15 Jeffrey D. Cummings , Jason S. Kalirai , P. -E. Tremblay , Enrico Ramirez-Ruiz

We use data from Gaia DR2 to constrain the initial-final mass relation (IFMR) for field stars with initial masses $0.9 \lesssim m_{\rm in}/M_{\odot} \lesssim 8$. Precise parallaxes have revealed unprecedented substructure in the white dwarf…

太阳与恒星天体物理 · 物理学 2018-07-04 Kareem El-Badry , Hans-Walter Rix , Daniel R. Weisz

The initial-final mass relation (IFMR) links a star's birth mass to the mass of its white dwarf (WD) remnant, providing key constraints on stellar evolution. Open clusters offer the most straightforward way to empirically determine the…

We present observational constraints for the initial-to-final mass relation (IFMR) derived from 11 white dwarfs (WDs) in wide binaries (WBs) that contain a turnoff/subgiant primary. Because the components of WBs are coeval to a good…

太阳与恒星天体物理 · 物理学 2022-01-05 Manuel Barrientos , Julio Chanamé

The initial-final mass relation (IFMR) of white dwarfs (WDs) plays an important role in stellar evolution. To derive precise estimates of IFMRs and explore how they may vary among star clusters, we propose a Bayesian hierarchical model that…

太阳与恒星天体物理 · 物理学 2018-07-18 Shijing Si , Ted von Hippel , Elliot Robinson , Elizabeth Jeffery , David C. Stenning , David A. van Dyk

The initial-final mass relationship of white dwarfs, which is poorly constrained, is of paramount importance for different aspects in modern astrophysics. From an observational perspective, most of the studies up to now have been done using…

天体物理学 · 物理学 2009-11-13 S. Catalan , J. Isern , E. Garcia-Berro , I. Ribas , C. Allende Prieto , A. Z. Bonanos

The stellar initial mass function (IMF) is commonly interpreted to be a scale-invariant probability density distribution function (PDF) such that many small clusters yield the same IMF as one massive cluster of the same combined number of…

星系天体物理 · 物理学 2023-02-22 Zhiqiang Yan , Tereza Jerabkova , Pavel Kroupa

The relation between the zero-age main sequence mass of a star and its white-dwarf remnant (the initial-final mass relation) is a powerful tool for exploration of mass loss processes during stellar evolution. We present an empirical…

天体物理学 · 物理学 2009-11-10 Kurtis A. Williams , M. Bolte , Detlev Koester

We present an initial-final mass relation derived from the spectroscopically-complete volume-limited 40 pc sample of white dwarfs. The relation is modelled using population synthesis methods to derive an initial stellar population which can…

太阳与恒星天体物理 · 物理学 2023-10-25 Tim Cunningham , Pier-Emmanuel Tremblay , Mairi O'Brien

The connection between the pre-stellar core mass function (CMF) and the stellar initial mass function (IMF) lies at the heart of all star formation theories. In this paper, we study the earliest phases of star formation with a series of…

星系天体物理 · 物理学 2019-05-22 Evangelia Ntormousi , Patrick Hennebelle
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